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Ho Chi Minh

Senior Software Engineer, VOIP, Zalo

What you will do

  • Develop new features for existing Zalo's products: Call, VOD, Live Streaming;
  • Research, analyze and design for group calling process on various platforms (Mobile & PC) such as: how to scale a large scope for call-group, make priority display/data flows/, etc;
  • Discover and implement new technologies to improve call quality on various conditions of network, devices;
  • Design and develop high performance, scalable video streaming, processing server.

What you will need

  • Strong experience in call processing and C++ coding for server side;
  • Excellent in Data Structures & Algorithms, Linux OS, Network and Web technologies;
  • Experienced in RTP/RTCP is a plus, VOIP applications, especially in a big call-apps such as: Snapchat, Teams, Line, Skype, conference meeting or in the army communication;
  • Experienced in video codecs such as: H264, H265 …;
  • Experienced in using the library related to VOIP: Webrtc, Pjsip.


  • Good at researching and looking for hard/new solution, creative thinking;
  • Good at problem-solving skills;
  • Opening mindset, young, active and good at both team/individual works;
  • "Can-Do" attitude.